217136906589514 has 16 divisors (see below), whose sum is σ = 327657283406208. Its totient is φ = 107917818438672.

The previous prime is 217136906589487. The next prime is 217136906589527. The reversal of 217136906589514 is 415985609631712.

It is a self number, because there is not a number n which added to its sum of digits gives 217136906589514.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72451147 + ... + 75388609.

It is an arithmetic number, because the mean of its divisors is an integer number (20478580212888).

It is a 1-persistent number, because it is pandigital, but 2⋅217136906589514 = 434273813179028 is not.

Almost surely, 2^{217136906589514} is an apocalyptic number.

217136906589514 is a deficient number, since it is larger than the sum of its proper divisors (110520376816694).

217136906589514 is a wasteful number, since it uses less digits than its factorization.

217136906589514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158949.

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 217136906589514 in words is "two hundred seventeen trillion, one hundred thirty-six billion, nine hundred six million, five hundred eighty-nine thousand, five hundred fourteen".